Mine-haul



H. V. BROWN.

MINE

APPucMmN HL HAUL.

zo nov. 12, 1919.4.

m9111511 sept. 14,1920.

gco f5. ATTORI? iJNlTED STATES' PATENT OFFICE. i

HERBERT v. BROWN, or GHERRY Tann Beltonen, PENNSYLVANIA.

' MINE-Haut. y,

Specification of Letters Patent. Paftlled Sept. A14C, 1920.

Application filed November 1919. Serial No. 337,448.

To all whom t may concern Be it known that I, HERBERT' V. BROWN, a citizen of the United States, residing inthe borough of Cherry Tree, in the county of Indians and State of Pennsylvania, (Whose post-oiiice address is Cherry'Tree, Pennsylvania,) have invented. certain new and useful Improvements in liineLI-Iauls; and I do hereby decl-arc the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the Vart to which it appertains to make and use the same.

My invention relates to an improved apparatus which is particularly adapted for hauling cars, mining machines and similar apparatus in 'mines, with particular reference to use in coal mines, although it may also he used for operating mining blickets in vertical or inclined shafts, or, in fact, for any purposes for which a hauling or hoisting apparatus may be used.

In order to simplify the phraseology and description herein, I will refer tomy apparatus as a mine haul.

My mine haul consists essentially of a bed `plate which is substantially smooth on the bottom and with 11p-turned endsto facilitate the sliding transfer of the same on a mine floor, or elesWhere, from place to place, and the entire length, Width and height of the apparatus is made as small andl compact as possiblein order thatit may 1go into restricted places such as are customerl y to be found in coal mines, es eeially those with thinner seams of coal. 4Iy apparatus can, of course, be placed upon a truck or car and be transportedto any place Where the headings or other clearances will permit.

The bed plate of my mine haul is provided with upwardly extending brackets adapted to receive an electric motor, and other brackets to receive the bearings of the different shafts and other portions of the apparatus. A

My mine haul includes a drum or spool adapted to receive a coil of rope, which lmay be of any material, but preferably of Wire rope ot' small diameter and great streneth so that a length of as much as 1,000 eet can hecoiled on said spool if desired, although, of course, a lesser amount may be used where great lengths are not needed. Said spool is revolubly mounted on a shaft and is provided With an internal spur gear near one end, and adjacent to, but spaced apart from said internal spurgear is another -nternal spur gear mounted on thc same shaft and normally free to either revolve on the shaft orremainfixed, ashereinaftcr described. In the space between these two in ternal'spur gears and on the 4same shaft, is mounted a spur gear with external teeth, and mounted in and near the periphery o said externalV gearis a stub shaft parallel to themain Ashaft and on each end of this short stub shaft is secured a pinion, one meshing with the internal gear of the hoisting drum or spool and the other meshing with the other internal gear adiacent thereto. The external spur gear is driven by an electric motor either directly from a spur pinion or from a spur pinion through an intermediate idler gear. As illustrated, -I have shown the drive from the spur pinion through the idler gear in order to keep the apparatus as small aspossihle, as a direct drive from 4the pinion of an electric motor of usual proportions might make the external spur gear much larger in diameter and the apparatus would then not be so easily handled in restricted locations. Each of the Alarge internal spur gears is provided With an external metal brake band havinga suitable liningsuch as asbestos, Wirepandother fabric, and adapted to' be contracted upon the smooth cylindrical exteriors of said gears by pulling one end of same by means of a suitable hand-lever and the elastic springof the metal brake band when released'ivi'll expand it V,and allow the gear on which it is mounted to rotate, While when clamped tightly the gear is stationary and when closed lightly or 'released -momentarily the gear can rotate slowly or step by step as desired. l

` Ilaving thusV given a general description ofniy invention, I will now, in order to;

male'thematter more clear, refer to the annexed sheetotI4 drawings forming part of this specification and 'in which rlike charac# ters refer to like parts:4 i

Figure Il isa top plan View of my improved mine haul; Fig. 2 is a vertical longion the drawings: 1 indicates the base frame generally, 2 are the curved ends thereof to facilitate sliddino or sliding over a mine door or other sui-Tere, 3 is a transverse rib on the base trarne which is adapted to abut against the end of a prop which is prefer`- ably located diagonally from the recess between the end ot' the 'frame and the rib 3, the other and upper end of the prop being iirinly located against the roof oi' the mine, for the purpose of anchoring` or securing the mine haul in position. A similar prop may be placed at the other end of the base-trame in the similar recess adjacent to the other cud of the base, said prop extending up.- uardl toward the rool in more nearly a verti'cal Cirection, to keep the apparatus from tipping when subjected to a pull on the rope. The base is vfurther provided with a central rib 4, illustrated, to stiften it and is also provided with pads or brackets 5 on which an electric motor 3() is mounted and secured. Other transverse ribs 6 and '7 are also pro vided to strengthen and stiften the construction and aid in the support of the motor. Journal seats 8 are provided for the shaft 12, which shaft is supported in said seats and may be secured irmly therein by means oi set-screws as illustrated, or it may merely rest in the same so that it can rotate if desired. This shaft is hollow for the purpose ot supplyingr oil to the interior thereof, which passes through suitable holes to the different moving parts. A bearingl 10 is also provided in which is mounted the pivot pin 33 on which the brake levers 29 arc adapted to swing, each of these brake levers being formed with a convenient handle for manual operation as illustrated. A seat or journal 9 is provided for the shat't 31, which carries the idler gear 251, which serves to transmit the motion from the electric motor pinion 25 to the external spur gear 15 rotatably mounted on the shaft 12, While 14 is an internal spur gear which is attached to or forms part of the drum or spool, and 13 is another internal spur gear rotatably mounted on the shaft 12, and each of these gears is provided with an external cylindrical surface adapted to serve as a braking surface tor the contractingI and expanding brake bands 22 and 23 respectively. The external spur gear 15 is provided with a bearing or seat 16 in which is mounted a short stub shaft 17 and on each end of this shaft are keyed small spur pinions 18 and 19, the spur pinion 18 being slightly larger than spur pinion 19, and the spur pinion 18 meshes with the internal spur gear 13 while the spur oinion 19 meshes with the internal spur gear 14. The Winding drum is 20, which is flanged on its ends as illustrated, and adapted to contain a large amount of cable or Wire 21 reeled thereon, the inner end of which may be secured to the drum and the outer end of which may be led outwardly and provided with au eye, hook or other appliance to attach to a car, bucket or other object as customary 22 is a contracting' brake band mounted over the outer cylindrical portion of the internal spur gear 13, and 23 is a similar brake strap mounted over the outer cylimlrioal surface of the internal drum gear lbl. The shaft of the electric motor 30 is 2G and the adjusting tiu'nbucldes of the brake rods are 27. The brake straps are cach provided with a olevis bolt 28 which is pivoted to the brake lever 29, as illustrated. 32 is a pin for securing the lined end oi? the brake strap to the lug 11, havinoA a bearing there in to receive said pin, and Ll is the counterhalance or weighted side of the external spur 1gear which is so designed and proportioned as to countcrbalancc the weight ot' the spur pini-ons 18 and 19, their shaft 17 and' boss or bearing,r 1G.

Having thus desrribcd my apparatus, l will now hriclly state its mode oi operation:

lfl'lhen the parts are in the position as ,illustrated and the rope paid out and attached to a car, train oi cars or other ob jects to be hauled, the brake straps 22 and 23 may be released by means of the handlevers 29 and the motor started by throwing,` in a suitable switch. This causes the external gear. 15 to revolve and, oi course, carries with it the two spur pinions 18 and 19, the spur pinion 19 meshing,l with the internal gear 111 of the drum or spool and the spur pinion 18 meshing' with the other intornai spur gear 13. The brake band 22 may then be tightened more or less and if fully tightened the internal spur gear 13 will be held llrinly and not rotate and the pinion 1Q will then rotate the drum 20. It it is desired to stop the drum 2O to a greater or less extent, the brake band 23 may be contracted upon it and by .dextrous manual movements of the levers 29 to contract the brakes 22 and 23, on the drums which they control, more or less, the spool may be made to move very slowly or step by step or up to the limit ot its speed and capacity, and it may be stopped very promptly whenever desired. The gear mechanism which operates this apparatus might be termed an internal epicyclic train.

For the class of work to which this mine haul is adapted it is desirable to be able to vary the speed of hauling or hoisting considerably and further to have instant and positive control of the working drum, and at the same time it is necessary to have the drum readily detachable :from the drive so that the rope can be overhauled or hauled ol, and all of this is accomplished to a de-V grec by my apparatus.

The action of the drum is absolutely controlled by the Jfriction clutch or by the bands which are capable of being slipped as much formed at ever Given load and the motor stopped again at no load.-v This eliminates the necessity of the use or" a controller and rheostat and makes possible the use of a simple inelosed starting switch, besides' which the necessity of a controller is obviated by the speed-varying ability of the brake band type of clutches in combination with the external gear, the internal gears, and the smaller pinioiis of diierent num# bers of teeth carried by the external gear.

In order that the gear arrangements, differentials, and ultimate Yratio and operation of saine may be understood, itfcafn beistated that one arrangement of mine haul `Wliieh I have constructed has a gear arrangement as follows:

The motor pinion 25 has 25 teeth, the

idler gear 24 has 50 teeth, the external spur' or intermediate gear 15 has 84 teeth, the internal spur gear 14 of the'drum has 54 teeth,`the other and slightly larger internal loose spur gear mounted on the same shaft as the drum gear has 57 teeth, the pinion 18 has 16 teeth and the pinion 19 has 13 teeth.

If the brake band 22 is clamped fast on the outer surface of the gear 13 so that said gear cannot revolve and the other brake band 23 is loose so that the drum may revolve freely, the drum will revolve at the full speed allowed by the gears and the reduction ratio between the motor and the drum will be expressed by the following formula and ratio:

57 25 54m-EX 13 or ratio of 23.6() to 1.

If, however, another arrangement of gears should be made, namely, if the motor pinion 25 has 25 teeth as before, the idler gear 24" or ratio of 20.24 to l.

The resultant driving of the drum shaft at a high gear reduction is due to the dilieienee in the number of teeth between the motor pinionland the external gear 15, and also to the further differential reduction accomplished bythe fact that the pinioiis 18 and 19 and the gears with which they mesh have a different number oi teeth.

To explain this further, it mi ht be `stated that il gears -18 and 19 should have Vthe same number of teeth and be of the same pitch diameters and-the 'internalgears of course, with which they mesh should then be of the same diameters and number of teeth, there would be no rotary movement of the drum. i

Although I have described and illustrated my invention in considerable detail, I do not 'Wish tobe limited to the exact and specific details thereof as` shown tor, or egluivalents thereof, as are embraced 'within t e scope of my invention, or as pointed out in the claims.

Although I have shown the drum gear and the companion gear as internal gears with pinions of different sizes meshing therein, said pinions being carried by an external gear, I Wish it understood that I may use external gears instead of internal gears or viceversa, as the result will be the saine, but in that case the cylinders for the brake bands would be located at the sides of the external gears instead of over them, as illustrated.

aving thus described my invention, What l claim-and desire to secure by Letters Patent is .1. A mine haul comprising a Winding drum, an internal gear secured thereto, a loose internal gear of different diameter secured to and mounted on the same shaft, an external gear provided with two pinions of dilierentA diameters mounted thereon, each adapted to mesh with one of the internal gears aforesaid, brake bands adapted to control each of said internal gears, and means for driving said external gear, whereby the drum canbe rotated at normal speed or at any lesser speed as may be desired.

2, A mine haul comprising a Winding drum provided with a gear secured thereto, another similar gear of different diameter mounted adfacent thereto and with their axes co-incrent, another gear mounted ad* jacent to the gears aforesaid, With two pin ions mounted between the axis and periphery thereof with their axis substantially parallel to the aforesaid gear shaft and ada ated to mesh with the two gears aforesaic, a brake band adapted to control each of the first mentioned gears, and means for driving said train, whereby the drum can be rotated at normal speed or at any lesser speed as may be desired.

3. A mine heul comprising a spool or druni adapted to receive end Wind o Coil ot' rope, e gear secured to and having its :mis substantially coincident with the drum exis, e loose geur mounted adjacent thereto und on the neme exis, :mother independent rear mounted on the seme exis end provided with two pinions secured between n.5 exis und periphery, the exis of seid pinions being substantially gernllel to the fixes et the gears aforesaid and meshing with the {il-et two gears, e motor mounted on seid appa retos und adopted to drive seid gears, the first two gears euch being provided with sind seperately controlled by e contrai-ting and expanding brake band, whereby the drum een be either held [ixed or rotated at any speed desired op to the normal speed dee to the gear ratios.

et. A niine heul comprising e. base plete curved upwardly et its ends and provided with prop pockets, e spool or drum mounted thereon, a differential. epicyolio train of gears ednllnted to rotate said drum, two brake bones adapted to control the Inovenient thereof, one ii'or the geur :attached to the drum sind the other tor the adjecent loose geni?, and means for driving the gears, whereby the seid drum een be either held fixed or roteted et any speed desired op to the noi-Inail speed due to the geeiratios.

5. A mine inurl comprising e buse plete, .fr spool or drum rerolubly mounted thereon` e diilerentiel epioyelie train of gears adapted to rotete Seid drum, including n gear lined to the drum and e loose gear adjacent thereto, seid drinn geer and loose geur eeeh being provided with o. braking son fece end e brake bend ndepted to control Jthe and means for driving seid gears. whereby tin. drum een be either held lined or rotated et any speed desired up to the normal speed diie to the geur ratios.

in testimony whoreoi1 l hereunto aliix my signature.

HERBERT V. BROWN. 

